Perhaps you should try some spelling variations:
hach duoc » hanh duoc, sach duoc, hoc duoc
lam nguoi » dao nguoi, tay nguoi
loi nguoi » loai nguoi, moi nguoi, doi nguoi
hach hoc » cach hoc, mach hoc, hoach hoi
hanh hoc » thanh hoc, hinh hoc, anh hoc
duoc loi » duoc li, duc loi, duoc hoi
tu hach » tu hanh, tu cach, tu sach
hoc lam » duoc lam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( tu hach hoc lam nguoi ) or ( thuc hanh hoc lam nguoi ))) or ( tu hach duoc loi nguoi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( tu hach hoc lam nguoi ) OR ( thuc hanh hoc lam nguoi ))) OR ( tu hach duoc loi nguoi )).
• Adding a wildcard symbol may retrieve word variants: (((( tu hach hoc lam nguoi ) or ( thuc hanh hoc lam nguoi ))) or ( tu hach duoc loi nguoi ))*.